/* 全局样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
}

.container {
  max-width: 414px;
  margin: 0 auto;
  background: white;
  min-height: 100vh;
}

/* 导航栏样式 */
.navbar {
  padding: 1rem;
  background: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* 卡片样式 */
.card {
  margin: 1rem;
  padding: 1rem;
  border-radius: 12px;
  background: white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 按钮样式 */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 24px;
  border: none;
  background: #007AFF;
  color: white;
  font-weight: 600;
}